Thread: Transmission temp light stays on

I haven’t driven to old bus for a while, should probably sell it but I digress, drove it today and the trans temperature warning light came on.
after checking and letting everything cool down it’s still on so a wiring issue not a temperature issue
where should I be looking to fix it?

most likely the trans temp switch.

It's mounted up the front, passengers side just near the cooler, but on the actual line. From the top you will see the rubber boot with two lines poking out. Pull the boot back and will reveal the plug.
You will lose some trans fluid when removing it to replace it.

The switch is horrendously expensive at about $200ish. AMR4948.

if you can wait for parts, I think they're cheaper from O/S tho.(no idea about shipping tho)